Question

我正在做一个简单的PHP问答游戏。我将问题和答案存储在数据库中。我的tblQuiz的表结构是这样的：

_id, question, answer1, answer2, answer3, correctanswer.

我必须在页面上随机显示它们。

这是我到目前为止所尝试的：

<!DOCTYPE html>
<html>
<head>
<title>Sample Quiz</title>
<?php 
include 'db.php';
$stmt = $conn->prepare( "SELECT *
      FROM tblquiz ORDER BY rand()" );
      $stmt->execute();
?>
</head>
<body>
<?php 
    $number = 0;
    for($i=0; $row = $stmt->fetch(); $i++){
            $number++;  
            $id = $row['_id'];
            $question = $row['question'];
            $answer1 = $row['answer1'];
            $answer2 = $row['answer2'];
            $answer3 = $row['answer3'];
            $correctanswer = $row['correctanswer'];       
?>

     <h4> <?php echo $number . ".) " . $question; ?></h4>   
     <label><input type="radio" value="<?php echo $answer1; ?>" name="<?php echo $question; ?>"> <?php echo $answer1; ?></label>
     <label><input type="radio" value="<?php echo $answer2; ?>" name="<?php echo $question; ?>"> <?php echo $answer2; ?></label>
     <label><input type="radio" value="<?php echo $answer3; ?>" name="<?php echo $question; ?>"> <?php echo $answer3; ?></label>
     <label><input type="radio" value="<?php echo $correctanswer; ?>" name="<?php echo $question; ?>"> <?php echo $correctanswer; ?></label>

<?php
    }
?>
<br />
<br />
<input type="submit" value="Submit" name="submit">

</body>
</html>

但我似乎无法得到我想要实现的目标，只是随机显示问题。我也想随机定位答案。

我是PHP新手，所以我需要你的帮助。非常感谢那些愿意帮助的人。

Answer 1

试试这个：

<body>
<?php 
$number = 0;
for($i=0; $row = $stmt->fetch(); $i++){
        $number++;  
        $id = $row['_id'];
        $question = $row['question'];
      $ans_array = array($row['answer1'],$row['answer2'],$row['answer3'],$row['correctanswer']);
     shuffle($ans_array);
?>

 <h4> <?php echo $number . ".) " . $question; ?></h4>   
 <label><input type="radio" value="<?php echo $ans_array[0]; ?>" name="<?php echo $question; ?>"> <?php echo $ans_array[0]; ?></label>
 <label><input type="radio" value="<?php echo $ans_array[1]; ?>" name="<?php echo $question; ?>"> <?php echo $ans_array[1]; ?></label>
 <label><input type="radio" value="<?php echo $ans_array[2]; ?>" name="<?php echo $question; ?>"> <?php echo $ans_array[2]; ?></label>
 <label><input type="radio" value="<?php echo $ans_array[3]; ?>" name="<?php echo $question; ?>"> <?php echo $ans_array[3]; ?></label>

<?php
}
?>
<br />
<br />
<input type="submit" value="Submit" name="submit">

</body>

Answer 2

使用此

<?php
function shuffle_assoc($list) { 
  if (!is_array($list)) return $list; 

  $keys = array_keys($list); 
  shuffle($keys); 
  $random = array(); 
  foreach ($keys as $key) { 
    $random[$key] = $list[$key]; 
  }
  return $random; 
} 
$firstquarter = array('January', 'February', 'March');
$suff = shuffle_assoc($firstquarter);

foreach($suff as $suffle)
{   
?>
     <label><input type="radio" value="<?php echo $suffle; ?>" name="<?php echo $question; ?>"> <?php echo $suffle; ?></label>

<?php
}
?>

编辑小提琴：http://www.phpfiddle.org/lite/code/rgc-zfj

结果小提琴：http://www.phpfiddle.org/api/run/rgc-zfj

在您的代码中

<body>
<?php 
$number = 0;
for($i=0; $row = $stmt->fetch(); $i++){
        $number++;  
        $id = $row['_id'];
        $question = $row['question'];
      $ans_array = array($row['answer1'],$row['answer2'],$row['answer3'],$row['correctanswer']);
     $suff = shuffle_assoc($ans_array);
     foreach($suff as $suffle)
     {
?>
 <h4> <?php echo $number . ".) " . $question; ?></h4>   
 <label><input type="radio" value="<?php echo $suffle; ?>" name="<?php echo $question; ?>"> <?php echo $suffle; ?></label>
 <?php
     }
}
?>
<br />
<br />
<input type="submit" value="Submit" name="submit">

</body>

Answer 3

将所有答案存储在一个数组中，然后随机迭代数组并打印您的答案标签，因为您无法优化查询以随机选择列。

Php显示单选按钮上的随机记录[测验]

3 个答案: